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WO2003030589A3 - Sound reproduction systems - Google Patents

Sound reproduction systems Download PDF

Info

Publication number
WO2003030589A3
WO2003030589A3 PCT/GB2002/004363 GB0204363W WO03030589A3 WO 2003030589 A3 WO2003030589 A3 WO 2003030589A3 GB 0204363 W GB0204363 W GB 0204363W WO 03030589 A3 WO03030589 A3 WO 03030589A3
Authority
WO
WIPO (PCT)
Prior art keywords
listener
electro
sound
acoustic transducer
plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/GB2002/004363
Other languages
French (fr)
Other versions
WO2003030589A2 (en
Inventor
Philip Arthur Nelson
Takashi Takeuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adaptive Audio Ltd
Original Assignee
Adaptive Audio Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adaptive Audio Ltd filed Critical Adaptive Audio Ltd
Priority to JP2003533647A priority Critical patent/JP4166695B2/en
Priority to EP02760432A priority patent/EP1433361A2/en
Priority to US10/488,494 priority patent/US20040247144A1/en
Publication of WO2003030589A2 publication Critical patent/WO2003030589A2/en
Publication of WO2003030589A3 publication Critical patent/WO2003030589A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/024—Positioning of loudspeaker enclosures for spatial sound reproduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/05—Generation or adaptation of centre channel in multi-channel audio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

The sound reproduction system is of the kind which comprises electro-acoustic transducer means, and transducer drive means for driving the electro-acoustic transducer means in response to a plurality of channels of a sound recording. The electro-acoustic transducer means comprises sound emitters which are spaced-apart in use, the transducer drive means comprising filter means that has been designed and configured with the aim of reproducing at a listener location an approximation to the local sound field that would be present at the listener's ears in recording space, taking into account the characteristics and intended positioning of the sound emitters relative to the ears of the listener, and also taking into account the head related transfer functions of the listener. The invention concerns the fact that the electro-acoustic transducer means comprises at least one pair of sound emitters that are spaced from the interaural axis of the listener at the listener location and positioned substantially in a plane that includes said interaural axis and is inclined relative to a reference horizontal plane that also includes said interaural axis, the angle of inclination of said inclined plane relative to said horizontal plane being in the range 60° to 120°. The pair of transducers will usually be positioned higher than the head, and the preferred angle of inclination of said plane is in the range 75° to 105°.
PCT/GB2002/004363 2001-09-28 2002-09-27 Sound reproduction systems Ceased WO2003030589A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003533647A JP4166695B2 (en) 2001-09-28 2002-09-27 Sound reproduction system
EP02760432A EP1433361A2 (en) 2001-09-28 2002-09-27 Sound reproduction systems
US10/488,494 US20040247144A1 (en) 2001-09-28 2002-09-27 Sound reproduction systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0123493.9 2001-09-28
GBGB0123493.9A GB0123493D0 (en) 2001-09-28 2001-09-28 Sound reproduction systems

Publications (2)

Publication Number Publication Date
WO2003030589A2 WO2003030589A2 (en) 2003-04-10
WO2003030589A3 true WO2003030589A3 (en) 2004-01-08

Family

ID=9922991

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/004363 Ceased WO2003030589A2 (en) 2001-09-28 2002-09-27 Sound reproduction systems

Country Status (5)

Country Link
US (1) US20040247144A1 (en)
EP (1) EP1433361A2 (en)
JP (1) JP4166695B2 (en)
GB (1) GB0123493D0 (en)
WO (1) WO2003030589A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8638946B1 (en) 2004-03-16 2014-01-28 Genaudio, Inc. Method and apparatus for creating spatialized sound
JP2006339694A (en) * 2005-05-31 2006-12-14 D & M Holdings Inc Audio signal output device
CN103716748A (en) * 2007-03-01 2014-04-09 杰里·马哈布比 Audio Spatialization and Environment Simulation
WO2008135049A1 (en) * 2007-05-07 2008-11-13 Aalborg Universitet Spatial sound reproduction system with loudspeakers
GB0712998D0 (en) * 2007-07-05 2007-08-15 Adaptive Audio Ltd Sound reproducing systems
CN102440003B (en) 2008-10-20 2016-01-27 吉诺迪奥公司 Audio spatialization and environmental simulation
EP2486736B1 (en) 2009-10-05 2022-04-13 Harman International Industries, Incorporated Multichannel audio system having audio channel compensation
EP2618564A1 (en) * 2012-01-18 2013-07-24 Harman Becker Automotive Systems GmbH Method for operating a conference system and device for a conference system
EP2974384B1 (en) 2013-03-12 2017-08-30 Dolby Laboratories Licensing Corporation Method of rendering one or more captured audio soundfields to a listener
ES2883874T3 (en) * 2015-10-26 2021-12-09 Fraunhofer Ges Forschung Apparatus and method for generating a filtered audio signal by performing elevation rendering
JP7038725B2 (en) * 2017-02-10 2022-03-18 ガウディオ・ラボ・インコーポレイテッド Audio signal processing method and equipment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998054926A1 (en) * 1997-05-28 1998-12-03 Bauck Jerald L Loudspeaker array for enlarged sweet spot

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817149A (en) * 1987-01-22 1989-03-28 American Natural Sound Company Three-dimensional auditory display apparatus and method utilizing enhanced bionic emulation of human binaural sound localization
JPS63252097A (en) * 1987-04-09 1988-10-19 Fujitsu General Ltd sound reproduction device
JPH08502867A (en) * 1992-10-29 1996-03-26 ウィスコンシン アラムニ リサーチ ファンデーション Method and device for producing directional sound
US5521981A (en) * 1994-01-06 1996-05-28 Gehring; Louis S. Sound positioner
EP0912077B1 (en) * 1994-02-25 2001-10-31 Henrik Moller Binaural synthesis, head-related transfer functions, and uses therof
JP3207666B2 (en) * 1994-03-15 2001-09-10 株式会社ケンウッド In-car audio equipment
US6243476B1 (en) * 1997-06-18 2001-06-05 Massachusetts Institute Of Technology Method and apparatus for producing binaural audio for a moving listener
GB9805534D0 (en) * 1998-03-17 1998-05-13 Central Research Lab Ltd A method of improving 3d sound reproduction
BR0016682A (en) * 1999-12-22 2002-09-03 Boxart Ag Method and installation for recording and reproducing sounds

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998054926A1 (en) * 1997-05-28 1998-12-03 Bauck Jerald L Loudspeaker array for enlarged sweet spot

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DURAND R BEGAULT: "3-D Sound for Virtual Reality and Multimedia", NASA/TM-2000-000000, XX, XX, PAGE(S) 1-246, XP002199910 *

Also Published As

Publication number Publication date
GB0123493D0 (en) 2001-11-21
WO2003030589A2 (en) 2003-04-10
EP1433361A2 (en) 2004-06-30
US20040247144A1 (en) 2004-12-09
JP4166695B2 (en) 2008-10-15
JP2005505218A (en) 2005-02-17

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